BroadSky Workshop

18th BroadSky Workshop

18th BroadSky Workshop introduces R&D activities to realize Non-Terrestrial Networks (NTN) for Beyond 5G in Japan and 6G Flagship.

The Workshop is organized by: Naoto Kadowaki, Director General Wireless Network Research Institute, NICT, Japan

The 18th BroadSky Workshop, under the theme of Actions toward Beyond 5G in Japan, introduces R&D activities toward “Beyond 5G” including NTN in Japan. "Beyond 5G" is the concept of following generations of 5G mobile communications systems, and a variety of White Papers are presented by many research organization, common carriers, manufacturers and universities in the world. Japanese government established "Beyond 5G R&D Promotion Program" in 2020, and communications industry and academia in Japan are also involved in the R&D for "Beyond 5G".


  • Opening by Naoto Kadowaki, NICT, Japan
  • NTN activities in 6G Flagship by Konstantin Mikhaylov, University of Oulu, Finland
  • NTN strategy of Space Compass by Shigehiro Hori, Space compass, Japan
  • HAPS Mobile-Direct Communication Systems towards Beyond 5G by Atsushi Nagate, Softbank, Japan
  • Activities in NICT by Yuma Abe, NICT, Japan
  • Closing

Naoto Kadowaki Naoto Kadowaki NICT, Japan, received B.S. in communications engineering, Master’s degree of information engineering, PhD of Information Science from the University of Tohoku, Sendai, Japan in 1982, 1984 and 2010 respectively. From April 1984 to March 1986, he was with Mitsubishi Electric Corporation. He joined Radio Research Laboratory (RRL), currently reformed as the National Institute of Information and Communications Technology (NICT) in 1986. He has involved in research and development of mobile and personal satellite communications, satellite communication protocols, and broadband satellite communication systems acting as a head of WINDS project in NICT. From July 1990 to June 1991, he was a visiting researcher to AUSSAT that was reformed as OPTUS Communications, Sydney, Australia. After he was with Advanced Telecommunications Research Institute International (ATR) as the Head of Department of Autonomous Systems and the Head of Department of Smart Networks from July 2004 to December 2006, he was the Managing Director of Strategic Planning Department in NICT from January 2007 to June 2008, Director General of Wireless Network Research Institute from July 2008 to June 2013, Executive Director of Strategic Planning Department from July 2013 to March 2016, Senior Executive Director of NICT from April 2016 to March 2017. He is currently Vice President, a Member of Board of Directors of NICT. He is a member of the IEEE, AIAA and Fellow of IEICE of Japan.